Car Alarms & Car Horns

Find what’s right for your vehicle

Enter your registration number and we’ll only show you appropriate products.

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Ways to apply

  • Build your basket and select Trade Credit at checkout.
  • Apply below to check your eligibility.

Activate your limit

  • If eligible, receive your Trade Credit limit instantly.
  • Authenticate your business with an ID check*.

*Only required on your first Trade Credit purchase.

Pay on account

  • Complete your purchase and pay on account at the end of the following month.
  • Enjoy no interest or transaction fees**.

**Late payments can impact your business credit

Already applied and have a limit? Approve your order via SMS to finalise your purchase.

Car Horn Replacement

A car horn is essential for alerting pedestrians and other motorists of your presence, and can help prevent serious accidents on the road. Little do many motorists know, but it’s a legal requirement to have a fully-working car horn, and a faulty or nonexistent horn will result in a failed MOT. If the horn is not working in your car, Halfords has a great range of car horns for sale.

About Our Car Alarms

A car alarm is designed to alert you when someone is attempting to get into your vehicle without the use of a key. Most modern cars are equipped with a basic car alarm, though third party alarms are the most secure and offer the highest level of protection. At Halfords, you’ll find a great selection of third party car alarms for a variety of car makes and models. What’s more, our high-quality car alarms will also reduce your insurance premiums, so it’s definitely an investment worthwhile. If your car alarm keeps going off, there’s a chance that it may be faulty or has been fitted incorrectly. If you need a car alarm fitting, head to your local Halfords Autocentre and speak to a member of our team for more information. Thatway, you can get a car alarm installation near you without any hassle.

Car Alarms and Car Horns For Sale

To find the best car alarm systems and horns for your vehicle, enter your registration number into the tool provided and our system will the right ones for you. Once you’ve found the products you need, use our convenient click and collect service to get hold of them sooner. Alternatively, opt for delivery and have them delivered to your home or work address. If you need any other car parts, Halfords is here to help.